Syntheses of Poly(butylene succinate) by Means of Non-Toxic Catalysts |
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| Authors: | Mohammed Lahcini Hicham Qayouh Takao Yashiro Peter Simon Hans R. Kricheldorf |
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| Affiliation: | 1. Laboratoire de chimie Bio-Organique et Macromoleculaire , Université Cadi Ayyad, Faculté des Sciences et Techniques Marrakech , Marrakech, Morocco;2. Laboratoire de chimie Bio-Organique et Macromoleculaire , Université Cadi Ayyad, Faculté des Sciences et Techniques Marrakech , Marrakech, Morocco;3. Institute für Technische und Makromoleculare Chemie , Hamburg, Germany;4. Institute für Technische und Makromoleculare Chemie , Hamburg, Germany;5. JSR Corporation , Miyukigaoka, Tsukuba, Ibaraki, Japan;6. Inst. of Polymer Research, GKSS Research Center , Geesthacht, Germany;7. Institute für Technische und Makromoleculare Chemie , Hamburg, Germany |
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| Abstract: | The usefulness of bismuth, calcium, magnesium and zinc salts for the preparation of poly(butylene succinate), PBSu, was studied. Two different approaches were compared. Firstly, 1,4-butanediol (or in a few experiments ethanediol) dimethyl succinate were condensed at temperatures up to 240°C in the presence of Bi2O3. Regardless of the feed ratio, only low molar mass polyesters having two diol endgroups were obtained. Secondly, 1,4-butanediol and succinic anhydride were polycondensed in refluxing decalin with azeotropic removal of water. BiCL3, BiBr3, BiI3, and Bi-triflate were used as catalyst and the monomer/catalyst ratio was varied. The highest molar masses were achieved with BiCl3. Analogous polycondensations catalysed with ZnCl2, Zn-triflate, MgCl2, Mg-triflate and CaCl2 were unsuccessful. Yet the BiCl3, decalin method was also successfully applied to the combination of succinic anhydride and 1,5-pentanediol. |
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| Keywords: | Bismuth polyester polycondensation succinic acid |
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